If you can work it around school schedules, the best time to visit Disney World, FLA is October/November or March/April. You miss the steamy summer and also it is way less crowded.

You have to pre plan your stay/park passes. At Disney World, the park hopper passes are a must so you can go between parks without additional charges.

Also, as a child, I never came home from Disney rested after a weeks stay. I was exhausted!! But if you take the land and sea option and do 4 days in the parks and 3 on the Disney cruise, there is more to see and plenty to do on board but it is STILL more restful spending those last few days on the cruise than park running.

We have taken 4 trips to Disney parks since Jan 2007. We took our daughter to CA for a trip to San Deigo and made the trip to Disneyland for her 1st visit at 18mos. She loved it. We spent 2 weeks in Disneyworld in Aug/Sept 2007 and this trip was even better for her. She was very excited to see the characters. We went again for New Years. It was great being there for the New Year but, it was super crowded. We went again the 1st week of March and we had no longer than a 20 min wait at the most for any ride.

I do recommend the following:

If you plan to go more than twice within a year I highly recommend the Annual Pass. It allows you a years worth of entry into the park plus gives you great discounts on food and lodging.

I also recommend staying on property as this allows you to come and go to the parks with ease either by driving or taking WDW transportation.

Another advantage of staying on property is the Extra Magic Hours. One park opens early and one stays open late for guest at WDW resorts. The extra magic hours allow you to ride the more popular rides with little or no wait time. Some rides and attractions are closed but, most are open.

I highly recommend one of the character meals. We have done many and my 3 favorite ones are:
Chef Mickey's for Breakfast
Crystal Palace for Luch/Dinner
1900 Park Fare for Breakfast

I also recommend taking some time to explore the different resorts Disney has to offer. We went and had lunch at Fort Wildness Campgrounds and they had a wonderful buffet. We also have taken the Wagon ride to see the fireworks. It was fairly inexpensive.

Disney has too wonderful Minature Golf Courses that we love to play. Annual Pass Holders also get a 50% discount.

Weekdays are less crowded than weekends in the parks but, on days that it is crowded we just hit the sights that are less crowded and avoid the long lines by using are fast passes.

Disney is a great place to visit for little ones, older kids, adults and grandparents. They have something to offer everyone.